Bostic (pectoral) was placed on injured reserve Friday.
Bostic won't return to Saturday's game in San Francisco due to a pectoral injury.
Bostic will draw a start Sunday against the Texans, Zach Selby of the Commanders' official site reports.
The Saints released Bostic on Tuesday.
Bostic signed a contract with the Saints on Monday, Adam Schefter of ESPN reports.
Washington placed Bostic (pectoral) on injured reserve Tuesday.
Bostic (pectoral) will likely miss the remainder of the season, Rhiannon Walker of The Athletic reports.
Bostic will undergo an MRI on Monday to determine the severity of a pectoral injury that he sustained in Sunday's win over Atlanta, Ian Rapoport of NFL Network reports.
Bostic (shoulder) has been ruled out for the remainder of Sunday's contest against the Falcons.
Bostic finished the 2020 season with 118 tackles (61 solo), three sacks, three pass defenses and one interception in 16 games.